Dynamical friction of a disk galaxy - The hyperbolic orbit

Details Dynamical friction of a disk galaxy - The hyperbolic orbit Dynamical friction of a disk galaxy - The hyperbolic orbit

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228...37v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 1, Feb. 1990, p. 37-41.

Astronomy and Astrophysics

Astrophysics

4

Disk Galaxies, Interacting Galaxies, Astronomical Models, Galactic Structure, Hyperbolic Trajectories

Scientific paper

The hyperbolic encounter between a softened pointlike satellite and a pure (no halo) self-gravitating disk is studied. This work is a continuation of two previous papers, in which slower (circular and parabolic) encounters were studied. The parameter dependence of the satellite's energy loss in the passage was found to agree with the impulsive approximation within a factor between 0.3 and 1.9.

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